Green Bay Packers guard T.J. Lang, shown here walking off the field after the San Francisco game Sept..8, was back in helmet and uniform at practice Friday. File/PackersNews.com

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Green Bay Packers guard T.J. Lang was back in helmet and uniform at practice Friday after suffering a concussion in Monday night’s 24-20 loss to Chicago, but wasn’t participating during the brief portion open to media.

The fact Lang was able to suit up, however, would indicate he has passed his protocol for a return. If he’s not able to play Sunday against the Eagles, right tackle Don Barclay would move to Lang’s post at right guard and fourth-year veteran Marshall Newhouse stepping into the starting lineup.

Outside linebacker Andy Mulumba (ankle) and quarterback Aaron Rodgers (shoulder) were the only two other players not participating. Outside linebacker Mike Neal and Ryan Pickett were both practicing after being limited on Thursday with knee issues.

Packers coach Mike McCarthy will speak to the media at approximately 12:30 p.m. CT.